There's fairly solid evidence that mild to moderate drinkers live longer. This is usually attributed to better socialization, which is a major factor in longevity, i.i. people with more robust social networks live longer and people who are lonely tend to die.

https://www.alcoholproblemsandsolutions.org/drinkers-live-lo...

Another possibility is that healthier people tend to drink, though overall health is usually controlled for in studies like these.